William s



W. S. MAYO.

Water Back for Ranges, &c.-

No. 28,096. Patented May 1,1860.

STATES PATENT OFFICE.

WILLIAM S. MAYO, OF NEW YORK, N. Y.

WATER-BACK FOR RANGES, 85c.

Specification of Letters Patent No. 28,096, dated May 1, 1860.

city of New York, every winter, and that they occasion a great deal of trouble and expense.

The nature of my invention consists in making a water-back, of any shape or form, into which is inserted a compressible and elastic body or substance which will allow, by its compression, room for the expanding ice, and thus take oil the pressure from the sides of the water-back.

At present, I prefer making the compressible body of cork covered with lead,

,- but it may be made of other elastic substances or of metal springs covered with flexible metal covers, or of thin tubes or cases strong enough to stand the pressure of the water and the steam, but capable of being crushed by the greater pressure of the ice,

with the disadvantage however in this last case of being useful only one time. Cork covered with lead has been proved by repeated experiment to be perfectly effectual and it is what I now prefer.

In the drawing A represents a water-back with the front taken out so as to show B the rows of cork or corks covered with lead fixed by a rod of iron to the back part of the water-back.

C represents an opening closed with a screw cap through which the compressible godly or bodies are introduced into the water- What I claim as my invention and desire to secure by Letters Patent is-- A water-back with a compressible body or substance of whatever form or material which being placed inside the water-back shall take 01? the pressure of freezing water and prevent the water-back from bursting when exposed to frost.

W. S. MAYO.

Witnesses GEO. W. RODGERS,

JAMES RODGERS. 

